func SetAuditEntry(ctx context.Context, audit *audit.Entry) context.Context {
	if ctx == nil {
		LogIf(context.Background(), "audit", fmt.Errorf("context is nil"))
		return nil
	}
	return context.WithValue(ctx, contextAuditKey, audit)
}

// GetAuditEntry returns Audit entry if set.
func GetAuditEntry(ctx context.Context) *audit.Entry {
	if ctx != nil {
		r, ok := ctx.Value(contextAuditKey).(*audit.Entry)
		if ok {

//	x-amz-copy-source-if-unmodified-since
//	x-amz-copy-source-if-match
//	x-amz-copy-source-if-none-match
func checkCopyObjectPartPreconditions(ctx context.Context, w http.ResponseWriter, r *http.Request, objInfo ObjectInfo) bool {
	return checkCopyObjectPreconditions(ctx, w, r, objInfo)
}

// Validates the preconditions for CopyObject, returns true if CopyObject operation should not proceed.
// Preconditions supported are:
//

	}
	return d
}

type writerWrapper struct {
	ch  chan<- []byte
	ctx context.Context
}

func (w *writerWrapper) Write(p []byte) (n int, err error) {
	buf := GetByteBufferCap(len(p))
	buf = buf[:len(p)]
	copy(buf, p)
	select {
	case w.ch <- buf:
		return len(p), nil
	case <-w.ctx.Done():
		return 0, context.Cause(w.ctx)
	}
}

    AbstractContext* ctx, absl::Span<AbstractTensorHandle* const> inputs,
    absl::Span<AbstractTensorHandle*> outputs) {
  Tape tape(/*persistent=*/false);
  tape.Watch(inputs[0]);
  AbstractTensorHandle* neg_output;
  TF_RETURN_IF_ERROR(ops::Neg(ctx, inputs[0], &neg_output, "Neg"));
  tape.RecordOperation(inputs, {neg_output}, nullptr, "Neg");
  return tape.ComputeGradient(ctx,

TF_CAPI_EXPORT extern void TFE_DeleteContext(TFE_Context* ctx);
TF_CAPI_EXPORT extern TF_DeviceList* TFE_ContextListDevices(TFE_Context* ctx,
                                                            TF_Status* status);

// Clears the internal caches in the TFE context. Useful when reseeding random
// ops.
TF_CAPI_EXPORT extern void TFE_ContextClearCaches(TFE_Context* ctx);

// Init validate and initialize the http target
func (h *Target) Init(ctx context.Context) (err error) {
	if h.config.QueueDir != "" {
		return h.initQueueOnce.DoWithContext(ctx, h.initDiskStore)
	}
	return h.initQueueOnce.DoWithContext(ctx, h.initMemoryStore)
}

func (h *Target) initDiskStore(ctx context.Context) (err error) {
	ctx, cancel := context.WithCancel(ctx)
	h.storeCtxCancel = cancel
	h.lastStarted = time.Now()

	}
	switch any(req).(type) {
	case *MSS, *URLValues:
		ctx = context.WithValue(ctx, TraceParamsKey{}, req)
	case *NoPayload, *Bytes:
		// do not need to trace nopayload and bytes payload
	default:
		ctx = context.WithValue(ctx, TraceParamsKey{}, fmt.Sprintf("type=%T", req))
	}
	if h.callReuseReq {
		defer h.recycleReq(req)
	}
	res, err := c.Request(ctx, h.id, payload)
	PutByteBuffer(payload)
	if err != nil {

			_, err = obj.PutObject(ctx, bucket, object, mustGetPutObjReader(t, bytes.NewReader(data), int64(len(data)), "", ""), ObjectOptions{})
			if err != nil {
				t.Fatalf("Failed to putObject %v", err)
			}

			partsMetadata, errs := readAllFileInfo(ctx, erasureDisks, "", bucket, object, "", false, true)
			fi, err := getLatestFileInfo(ctx, partsMetadata, z.serverPools[0].sets[0].defaultParityCount, errs)

			}
			hcTimer.Reset(defaultHealthCheckDuration)
		case <-ctx.Done():
			return
		}
	}
}

// periodically rebuild the healthCheck map from list of targets to clear
// out stale endpoints
func (sys *BucketTargetSys) reloadHealthCheckers(ctx context.Context) {
	m := make(map[string]epHealth)
	tgts := sys.ListTargets(ctx, "", "")
	sys.hMutex.Lock()
	for _, t := range tgts {

			apiErr = toAPIError(ctx, vErr)
			argumentName = strings.ToLower("versionId")
			argumentValue = vErr.VersionID
		default:
			apiErr = toAPIError(ctx, vErr)
		}
		valid = false
		return
	}

	opts.MaxParts, err = parseIntHeader(bucket, object, r.Header, xhttp.AmzMaxParts)
	if err != nil {
		apiErr = toAPIError(ctx, err)
		argumentName = strings.ToLower(xhttp.AmzMaxParts)
		valid = false
		return
	}